Question

multiple choice question
which statement accurately describes the primary transcript of a gene in eukaryotes?
it has to be extensively modified (includes addition and removal of elements) before it can be translated.
it undergoes two relatively minor additions (adding a cap and a poly - a tail) after which it is translated.
it can be immediately translated.
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Explanation:

In eukaryotes, the primary transcript (pre - mRNA) undergoes extensive processing. This includes the addition of a 5' cap, a 3' poly - A tail, and the removal of introns (splicing). These modifications are crucial for the stability, transport, and proper translation of the mRNA. The option "It undergoes two relatively minor additions (adding a cap and a poly - A tail) after which it is translated" is incorrect because splicing (removal of introns) is also a major part of the processing. The option "It can be immediately translated" is wrong as prokaryotes (not eukaryotes) can have more immediate translation of their simpler transcripts.

Answer:

It has to be extensively modified (includes addition and removal of elements) before it can be translated.